Osg 520015212 Screw Machine Drill Bit 3.86mm Carbide

Product Description

The OSG 520015212 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding industrial applications. Built to Series 5200 specifications, it features a 3.86 mm (0.1520 inch) diameter, a 140-degree point angle with R-thinned web geometry, and a WXL coating for extended tool life. The two-flute spiral design and tapered web configuration promote efficient chip evacuation and reduced cutting resistance. Coolant-through capability makes it compatible with through-spindle coolant systems. This bit is intended for use by machinists and toolroom professionals working in production or job-shop environments.

This drill bit is suited for drilling steel, stainless steel, cast iron, titanium, and titanium alloys. The screw machine length format provides a shorter, more rigid profile compared to jobber-length bits, making it well-suited for CNC machining centers, drill presses, and screw machine setups where rigidity and positional accuracy are critical. The straight-cylindrical shank with a 4.00 mm (0.1575 inch) diameter fits standard collets and chucks in that size range.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• WXL coating for improved heat resistance and extended tool life
• 140-degree R-thinned point reduces thrust force and improves self-centering
• Coolant-through design supports through-spindle coolant delivery
• Screw machine length profile provides enhanced rigidity over jobber-length bits
• Regular spiral flute geometry with 3xD flute-to-diameter ratio for efficient chip removal

Compatibility

Designed for use in CNC machining centers, screw machines, and drill presses with collet or chuck systems accepting a 4.00 mm straight-cylindrical shank. Primary workpiece materials include steel, stainless steel, cast iron, titanium, and titanium alloys.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the spindle fully stopped and the machine powered down. Ensure the collet or chuck is clean and properly torqued to the tool holder manufacturer's specification before running. Verify coolant-through passages are clear and coolant pressure is appropriate for the machine before enabling through-spindle coolant. Inspect the cutting edges for chipping or wear before each use.